742857238 has 8 divisors (see below), whose sum is σ = 1129980240. Its totient is φ = 366197160.

The previous prime is 742857217. The next prime is 742857277. The reversal of 742857238 is 832758247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2615553 + ... + 2615836.

It is an arithmetic number, because the mean of its divisors is an integer number (141247530).

Almost surely, 2^742857238 is an apocalyptic number.

742857238 is a deficient number, since it is larger than the sum of its proper divisors (387123002).

742857238 is a wasteful number, since it uses less digits than its factorization.

742857238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231462.

The product of its digits is 752640, while the sum is 46.

The square root of 742857238 is about 27255.4075001641. The cubic root of 742857238 is about 905.6668113562. Note that the first 3 decimals are identical.

The spelling of 742857238 in words is "seven hundred forty-two million, eight hundred fifty-seven thousand, two hundred thirty-eight".